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Biology, 23.07.2020 06:01 DroctorWellsfan

As the sun ages, it contains: A. more oxygen and less helium.
B. more hydrogen and less helium.
C. more helium and less hydrogen.
O D. more carbon and less nitrogen.

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As the sun ages, it contains: A. more oxygen and less helium.
B. more hydrogen and less heliu...
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